Sukhwinder Singh Billing and Sushma Gupta and Sukhjit Singh Dhaliwal, A Sandwich-type Theorem with Applications to Univalent Functions. journal = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology. September 2009, vol. 33(9). 751 - 756 [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/2210.